Take a look at the Dev Blogs page on the EVE Online Community portal for recently published and upcoming blogs regarding the changes coming with EVE Online: Rubicon 1.1.

Please remember to set a long skill in training for the duration of the deployment, and please also be sure to check your overview settings in game to make sure they include the new deployable structures, in order to avoid any confusion during combat.

You can check out the full patch notes here for an in depth look at what's coming with EVE Online: Rubicon.

The patch size from EVE Online: Rubicon to EVE Online: Rubicon 1.1 will be approximately 1.1GB.